Datasheet Analog Devices LTC3545IUD-1#PBF — 数据表

LTC3545/LTC3545-1
Triple 800mA Synchronous
Step-Down Regulator–2.25MHz
FEATURES
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■ DESCRIPTION Three 800mA Outputs
High Efficiency: Up to 95%
2.25V to 5.5V Input Voltage Range
Low Ripple (1μF) supply bypass capacitors. The
discharged bypass capacitors are effectively put in parallel with COUT, causing a rapid drop in VOUT. No regulator
can deliver enough current to prevent this problem if the
load switch resistance is low and it is driven quickly. The
only solution is to limit the rise time of the switch drive
so that the load rise time is limited to approximately (25
• CLOAD). Thus, a 10μF capacitor charging to 3.3V would
require a 250μs rise time, limiting the charging current …